Question:
Type A (augmented) adverse drug reactions are characterized by all except
Type A (augmented) adverse drug reactions are characterized by all except
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Adverse drug reactions (ADRs) are classified into Type A and Type B.
Updated On: Jun 24, 2026
- Qualitatively abnormal responses to the drug
- Predictable from the drug's known pharmacological or toxicological effects
- Generally, dose-dependent
- Usually common
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The Correct Option is A
Solution and Explanation
Concept:
Adverse drug reactions (ADRs) are classified into Type A and Type B. Type A ("Augmented") reactions are exaggerations of the drug's normal pharmacological action, whereas Type B ("Bizarre") reactions are unexpected and not related to the known effect.
Step 1: Type A reactions are predictable from the drug's pharmacology, dose-dependent, and common — options 2, 3 and 4 all correctly describe them.
Step 2: A qualitatively abnormal response (something unusual and unrelated to the expected effect, like an allergic reaction) is the hallmark of Type B, not Type A. Since the question asks for the exception, this is the answer.
Answer: Option (1) — A qualitatively abnormal response describes Type B, not Type A reactions. (1)
Adverse drug reactions (ADRs) are classified into Type A and Type B. Type A ("Augmented") reactions are exaggerations of the drug's normal pharmacological action, whereas Type B ("Bizarre") reactions are unexpected and not related to the known effect.
Step 1: Type A reactions are predictable from the drug's pharmacology, dose-dependent, and common — options 2, 3 and 4 all correctly describe them.
Step 2: A qualitatively abnormal response (something unusual and unrelated to the expected effect, like an allergic reaction) is the hallmark of Type B, not Type A. Since the question asks for the exception, this is the answer.
Answer: Option (1) — A qualitatively abnormal response describes Type B, not Type A reactions. (1)
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